1025104402251 has 16 divisors (see below), whose sum is σ = 1524077730720. Its totient is φ = 680970890880.

The previous prime is 1025104402249. The next prime is 1025104402291. The reversal of 1025104402251 is 1522044015201.

It is a happy number.

1025104402251 is a `hidden beast` number, since 1 + 0 + 2 + 5 + 1 + 0 + 4 + 402 + 251 = 666.

It is not a de Polignac number, because 1025104402251 - 2¹ = 1025104402249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1025104402211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67549050 + ... + 67564223.

It is an arithmetic number, because the mean of its divisors is an integer number (95254858170).

Almost surely, 2^{1025104402251} is an apocalyptic number.

1025104402251 is a deficient number, since it is larger than the sum of its proper divisors (498973328469).

1025104402251 is a wasteful number, since it uses less digits than its factorization.

1025104402251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135113563 (or 135113557 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 1025104402251 its reverse (1522044015201), we get a palindrome (2547148417452).

The spelling of 1025104402251 in words is "one trillion, twenty-five billion, one hundred four million, four hundred two thousand, two hundred fifty-one".